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Installed header AFR leaned out

 
Old May 24, 2005 | 03:59 AM
  #16  
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wow jorge , you get peak torque at 5k? Usually people get it around 3750. I'd go rich like 11 for saftey reasons.
Old May 24, 2005 | 08:48 AM
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i get peak boost a ~3600-3700 rpm but dyno showed peak torq at 5k rpm.
Old May 24, 2005 | 05:18 PM
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Really now, can you post a graph?
Old May 26, 2005 | 07:32 PM
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is this what you're asking?
Old May 27, 2005 | 05:21 PM
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wow that graph looks super odd. Usually torque peaks a lot earlier than that unless you messed with the boost tables. I think you'd net a lot more torque if you didn't hinder the boost.
Old May 27, 2005 | 06:51 PM
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That is Shiv's work you're talking about
Also cam timing has alot to do with it.
Old May 27, 2005 | 07:11 PM
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Here's a buddy's graph that has the same mods as you do. Boost wasn't hindered at all.



Old May 27, 2005 | 07:22 PM
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different dynos different results, BTW that graph is not my car mine did 339whp on a Mustang in Dallas. Dyna packs and Dynojets give similar high peak torque figures low in the rpm range.

I'd rather have ~315ftlb from 4k to 5k. I'll leave those high peak tq numbers to BT VW 1.8Ts
Old May 27, 2005 | 08:05 PM
  #24  
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315 ft lbs from 4 to 5k? What are you.. a supra? LoL
Old May 27, 2005 | 08:15 PM
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Ok lil'phillip how about this: 330~339ft lb from 4 to 5k time to be quiet now

Old May 28, 2005 | 12:33 AM
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definately could peak more at around 4000. See how close the torque is? What do your boost tables look like? Btw, when are you going to stay up late enough to come out with us?
Old May 28, 2005 | 08:44 AM
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Thanks for the tip Phillip, but the boost is at 100% about 25 psi the 16g will not put out more. My cams were at -4/-1.5 at the time reason for that TQ curve to be like that.
This may not be the best setup for quick spoolup but gives my car great vacuum at idle, therefore runs great in city rush hour traffic. Stop and go traffic with a/c on when brakes are used kills vacuum and stalls engine some times with -3/-3 or any combo of 110 LSA or less. And it always happens in the worst circumstances! I hope XEDE idle stability control is implemented soon since my car always wants to adapt out idle screw adjustments and always returns to 850 rpm.
 


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